I'm assuming you have the original blue urethane Nail made by Faball, right? If so, this ball has a hard urethane shell with the classic hammer core, (2-piece ball). Much heavier rolling than the regular pancake 3-piece balls made during the same time period. Designed to hook less than the original Black Hammer, but more than the Pink Hammer.
If I remember correctly, Marshall Holman used this ball quite a bit back when it came out.
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